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Improvement of Transonic Airfoil Performance through Passive Shock/Boundary-Layer Interaction Control

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Turbulent Shear-Layer/Shock-Wave Interactions

Part of the book series: International Union of Theoretical and Applied Mechanics ((MANUTECH))

Summary

Experimental investigations are presented, aiming at the improvement of transonic airfoil performance through passive control of the shock/boundary layer interaction (SBLI) by boundary layer ventilation in the shock region. The experiments were carried out in the DFVLR 1m × 1m Transonic Windtunnel Göttingen (TWG), using the supercritical MBB airfoil VA-2 designed to have a relatively small shock shifting with Mach number. The basic model was equipped with an exchangeable insert in the shock region to allow measurements with ventilation through slotted or perforated strips and without control. The effectiveness of the different SBLI control methods was evaluated from pressure distribution, boundary layer and wake measurements as well as Schlieren observations.

It is shown that boundary layer ventilation in the shock region mainly weakens the shock wave and stabilizes the shock position, resulting in substantial improvements of the transonic airfoil performance at off-design conditions.

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References

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Author information

Authors and Affiliations

  1. Messerschmitt-Bölkow-Blohm GmbH Unternehmensbereich Transport- und Verkehrsflugzeuge, D-2800, Bremen, USA

    P. Thiede

  2. Institut für Experimentelle Strömungsmechanik, Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., D-3400, Göttingen, Germany

    P. Krogmann

Authors
  1. P. Thiede
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  2. P. Krogmann
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Editor information

Editors and Affiliations

  1. Direction de L’Aérodynamique, ONERA, B.P. 72, 29. Av. de la Division Leclerc, F-92322, Châtillon Cedex, France

    J. Délery

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© 1986 Springer-Verlag Berlin, Heidelberg

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Thiede, P., Krogmann, P. (1986). Improvement of Transonic Airfoil Performance through Passive Shock/Boundary-Layer Interaction Control. In: Délery, J. (eds) Turbulent Shear-Layer/Shock-Wave Interactions. International Union of Theoretical and Applied Mechanics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-82770-9_10

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  • DOI: https://doi.org/10.1007/978-3-642-82770-9_10

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-82772-3

  • Online ISBN: 978-3-642-82770-9

  • eBook Packages: Springer Book Archive

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